Mangroves, seagrasses, and salt marshes or collectively known as blue carbon ecosystems are gaining salience because of their essential roles in reducing the risks and impacts of climate change through carbon sequestration and other beneficial services. Despite this, they are globally declining because of their vulnerability to natural and anthropogenic disturbances. Similar trends are also observed in Busuanga Island, Palawan province in the Philippines, where blue carbon ecosystems along with other coastal environments are perceived to be threatened by a number of factors. To better understand the state changes of blue carbon ecosystems, we collected the drivers and pressures and their impact on the whole coastal ecosystem as well as existing management responses by interviewing 26 stakeholders representing community organizations, non-government organizations, and municipal level government units from two municipalities (Busuanga and Coron) in the island. We used the Drivers-Pressures-State-Impact-Response (DPSIR) framework to analyze the information gathered from the interviews. The results of this study show that lack of institutional capacities (indirect driver) is the leading factor that hinders the progress or efficacy of the management. Most pronounced pressures caused by direct drivers to blue carbon ecosystems include overexploitation and coastal developments. The responses collected in the interviews can be grouped into policies and implementation, capacity building development, welfare and livelihood development, ecosystems management, and tourism measures. The information gathered in this study can be used to improve or change existing responses into more precise and contextualized measures in addressing specific impacts observed in the local areas.

红树林，海草和盐沼或统称为蓝碳生态系统正日益受到关注，因为它们在通过固碳和其他有益服务降低气候变化的风险和影响方面发挥着至关重要的作用。尽管如此，由于它们容易受到自然和人为干扰的影响，它们在全球范围内正在下降。在菲律宾巴拉望省的布桑加岛上也观察到了类似的趋势，那里的蓝碳生态系统以及其他沿海环境被认为受到多种因素的威胁。为了更好地了解蓝碳生态系统的状态变化，我们通过采访了代表社区组织的26个利益相关者，收集了驱动力和压力及其对整个沿海生态系统的影响以及现有的管理对策，非政府组织以及岛上两个城市（布桑加和科隆）的市级政府部门。我们使用了驾驶员压力状态影响响应（DPSIR）框架来分析从访谈中收集的信息。这项研究的结果表明，缺乏机构能力（间接驱动力）是阻碍管理进展或效力的主要因素。蓝碳生态系统的直接驱动力造成的最明显压力包括过度开发和沿海开发。访谈中收集到的反馈意见可以分为政策和实施，能力建设，福利和生计发展，生态系统管理和旅游业措施。